## Creating an Action

For the "Hello" task, you will create a `say` action that reads a `message` parameter from the request and displays that message back to the user. If the request does not provide a `message` parameter, the action will display the default "Hello" message.

> Info: Actions are the objects that end users can directly refer to for execution. Actions are grouped by controllers. The execution result of an action is the response that an end user will receive.

Actions must be declared in ...